City report · Tanga, Tanzania
Tanga Air quality today
Air quality in Tanga currently reads AQI 47 (Good): Air quality is satisfactory for everyone.
AQI 47
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 7.8
- tree cover
- 25.8%
- trees in this area
- 58.3K
- more trees needed
- 9.5K
Measured across a 2 km radius around Tanga, Tanzania (12.57 km²), from a satellite image of Sep 6, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Tanga · AQI 47 (Good)
Tanga's tree count comes to 58,277 trees across 9.04 km² of land, 4 points below the 30% tree-cover level considered healthy for this area, so roughly 9,487 more trees would close the gap.
Air quality detail
Air quality in Tanga today: AQI 47, Good
Main pollutant: PM2.5 · Observed Nov 11, 09:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Air quality is satisfactory for everyone.
PM2.5
7.8
PM10
11.0
NO₂
0.5
O₃
47.0
SO₂
0.9
CO
121.0
- Outdoor exercise
- A good day to be active outside
- Windows
- Open them to air the house
- Mask
- Not needed
- Air purifier
- Not needed
Over the last 7 days, the CAMS air-quality model put Tanga's daily AQI at 49 on average, from 39 on Nov 5 to an hourly peak of 60 on Nov 10.
Where Tanga stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Tanga: Below target
25.8% tree cover against a 30% healthy-neighborhood target, across 9.04 km² of land.
Trees in this area
58,277
Target trees
67,764
More trees needed
9,487
CO₂ if planted / yr
208.7 t
Deforestation · 2001–2025
How much forest has Tanga lost?
Since 2001, the area within 10 km of Tanga has lost about 1,070 hectares of forest (about 1,500 football pitches): 20% of the forest it had in 2000. Most of it (over 99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2018: satellite photo from September 2018 of a 5 × 5 km area about 7 km north of the city center.
- Forest lost since 2001
- 1,070 haabout 1,500 football pitches
- Share of its forest
- 20%of what there was in 2000
- Cleared for good
- 1,060 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 49 hectares a year in 2021–2025, down from 76 hectares a year in 2016–2020. The worst year was 2017, when about 128 hectares of forest were lost.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 19 ha | under 1 ha | 19 ha |
| 2002 | 6 ha | under 1 ha | 6 ha |
| 2003 | 26 ha | under 1 ha | 26 ha |
| 2004 | 3 ha | under 1 ha | 3 ha |
| 2005 | 28 ha | under 1 ha | 28 ha |
| 2006 | 106 ha | under 1 ha | 106 ha |
| 2007 | 14 ha | under 1 ha | 14 ha |
| 2008 | 27 ha | under 1 ha | 27 ha |
| 2009 | 40 ha | under 1 ha | 40 ha |
| 2010 | 23 ha | under 1 ha | 23 ha |
| 2011 | 16 ha | under 1 ha | 16 ha |
| 2012 | 44 ha | under 1 ha | 44 ha |
| 2013 | 52 ha | under 1 ha | 52 ha |
| 2014 | 28 ha | under 1 ha | 29 ha |
| 2015 | 9 ha | under 1 ha | 9 ha |
| 2016 | 29 ha | under 1 ha | 29 ha |
| 2017 | 128 ha | under 1 ha | 128 ha |
| 2018 | 94 ha | under 1 ha | 94 ha |
| 2019 | 88 ha | under 1 ha | 88 ha |
| 2020 | 43 ha | under 1 ha | 43 ha |
| 2021 | 23 ha | under 1 ha | 23 ha |
| 2022 | 37 ha | under 1 ha | 37 ha |
| 2023 | 83 ha | under 1 ha | 83 ha |
| 2024 | 42 ha | under 1 ha | 42 ha |
| 2025 | 58 ha | under 1 ha | 59 ha |
What is causing deforestation around Tanga?
- Farms, pasture and plantationscleared for good74% · 787 ha
- Towns and roadscleared for good17% · 177 ha
- Mining and energycleared for good9.5% · 101 ha
Also: storms, floods and other natural causes, unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
Forest gained and lost, 2000–2020
- Forest in 2000
- 2,420 ha
- Forest in 2020
- 2,090 ha
- Overall change
- −330 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Tanga shrank from about 2,420 hectares to 2,090 hectares, a net loss of about 330 hectares (−14%). New forest grew on about 57 hectares, but 386 hectares were lost.
These 2000 and 2020 maps, from the University of Maryland, count any land with trees taller than 5 m as forest, including plantations and orchards. Forest that was cut or burned and had grown back by 2020 counts in both years, so the loss here is smaller than the yearly figures.
These figures cover everything within 10 km of the city center, a wider area than the report above, because forest is usually lost at a city's edges.
Source: Hansen/UMD/Google/USGS/NASA, Global Forest Change (GFC-2025-v1.13); causes: WRI/Google DeepMind drivers of forest loss; both CC BY 4.0, summed by Airleaf for each area. Forest gained and lost 2000–2020: Potapov et al. 2022, UMD GLAD Global Land Cover and Land Use Change, CC BY 4.0. Images: contains modified Copernicus Sentinel data. How it's measured
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Frequently asked
Questions about Tanga
What is the air quality (AQI) in Tanga right now?
The latest reading for Tanga shows an AQI of 47 (Good), observed Nov 11, 09:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Tanga today?
At AQI 47 (Good): a good day to be active outside. Windows: open them to air the house. Masks: not needed. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Tanga been like this week?
Over the last 7 days, the CAMS air-quality model put Tanga's daily AQI at 49 on average, from 39 on Nov 5 to an hourly peak of 60 on Nov 10. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Tanga lost since 2001?
Since 2001, the area within 10 km of Tanga has lost about 1,070 hectares of forest (about 1,500 football pitches): 20% of the forest it had in 2000. Most of it (over 99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is slowing down: about 49 hectares a year in 2021–2025, down from 76 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Tanga shrank from about 2,420 hectares to 2,090 hectares, a net loss of about 330 hectares (−14%). New forest grew on about 57 hectares, but 386 hectares were lost.
What is the tree count in Tanga?
Tanga has an estimated 58,277 trees across the 9.04 km² of land measured — 25.8% tree cover, 4 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Tanga need?
Tanga needs roughly 9,487 more trees to close a 4-point shortfall against its 30% tree-cover target — about 208.7 t of extra CO₂ absorbed per year once grown.
How are Tanga's air quality and tree cover measured?
Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors. Tree cover is measured from Sentinel-2 L2A (ESA Copernicus) via Earth Search satellite imagery at 10 m detail across a 2 km radius around Tanga; the tree count is an estimate derived from that cover.
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